This Stanley Classic simply withstands everything . The sturdy little Stanley The Legendary Thermos Bottle is built to withstand anything - bumps, dents and even drops - while keeping your drink hot or cold for up to 20 hours. With a little ice, the contents even stay chilled for up to 4 days. It's slim so you can grip it with one hand and the leak-proof design has a twist-and-pour cap for better control. The insulated lid also serves as a drinking cup. This thermos flask is super easy to clean and every part is dishwasher-safe.